Fan device.



JOHN A, nouennnrv, or z arrnsvrnnn,*onro.

,rmmvma r Speeification ofi Letters rat'eia.

Application filed February 5,1915: Serial No. 6,804.

To all whom it may concern: 7

Be it known that I, JOHN A. DoUeHER'rY, a citizen of the United States, residing at the city of Zanesville in the county of Mus; kingum and State of Ohio, haveinvented a new and useful Fan Device, of which the following is a specification.

My invention relates to improvements in cooling fans and other fans; and the'object of my invention is to agitate andcirculate the air of an ofiice, room and so forth, in a more extensive and perfect manner than the laterally and at thesame elevation, and so similarly directed, and so'vertically pitched and laterally trained, that their currents combine; and Fig. 2 is a perspective view showing the fans so situated, laterally and at different elevations, and so similarly digected horizontally that their currents com- 1 represents the stand and 2, the handhold of my fan device; and 3, the arms'of equal length as shown in Fig. 1, which support motors 4 and 5 whichoperatefans 6 and 7 which are situated at the same elevation; fan 6 being elevated and fan "7 being depressed in pitch in relation to their conimon horizontal plane; vand both fansbein so similarly directed and so laterally traine that the elevated and depressed currents (which are spiral currents, formed by the lateral air-pressure upon the radially, circumferentially and axially directed air from the fans) join; and, when the fans rotate inthe same direction, their joint :action is to cause their primary currents more or less to oppose and resultantly to divert each other, and correspondingly to force the joint current radially outward; and which difi'erently pitched andlaterally trained primary, and modified and radially enlarged resultant currents more thoroughly and evenly disair through the space} to tribute the moving be fanned or cooled.

,VVhenjthe fans rotate in opposite directions, the nearest and farthest parts of the two currents,'have substantially reversed resultantefi'ects upon each other.

.Andwhenl he fans are situated at differ ent elevations, their currents impinge eccentrically, thereby producing a modified re *sultant current, substantially like the one above described. a t

8 and 9 represent the arms of unequal length as shown in Fig. 2. Arm 8 supports "motor 10' and arm 9 supports 1 motor 11. 'Motor 10 operates fan 12, and motor 110p} 'erates fan 13; and when they-rotate in the r same direction, their {currents affect each other, producing-resultant modifications of substantially the same currents as those prov I duced by fans 6 and 7 as above described. a 7

Iclaim A. 1. The combination with a fan device, of a single stand combined'withtwo arms in stantially as described.

trained that their currents combine, sub

, Patented Apr. 15, 19.19.

combination with two fans, one fan being combined with "one of said arms and the 2.,Th combination with a an device, of a single stand comblned withtwo: arms in combination with two fans; one of said fans being combined with one of said arms, and the other of said fans being combined with the other of said arms, said fans being so directed, and trained that the nearest parts and the farthest parts of their currents combine, substantially asdescribed.

onekof said arms, and the other fan being combinedwith the other of said arms; said A fans bemg so situated 'atdiflferent elevations A. O. PORTER.

Copies of this pat ent may be obtained 101' five cents eacligbj addressing the (Commissioner-of Eaten,

' washingtonflfl. 0. V t

o t 3; The combination with a fan device of a; T v single stand combined with two arms having 7 Y different elevations, in combination with two fan's; one of said fan's being combinedwith 

